During the course of his representation of a client a lawyer shall not:

Communicate or cause another to communicate on the subject of the representation with a
party he know to be represented by a lawyer in that matter unless he has the prior consent
of the lawyer representing such other party or is authorized by law to do so.

Give advice to a person who is not represented by a lawyer, other than the advice to
secure counsel, if the interests of such person are or have reasonable possibility of
being in conflict with the interests of his client.